Fixes PolicyResource.addPolicy.
PolicyApi returns 204 to start/stop/destroy
Fixes use of filters in BrooklynRestApiLauncher
Add type coercion from Map to ProxySslConfig
Log extra unused keys in ProxySslConfig config map
This closes #123

* github/pr/123:
  Log extra unused keys in ProxySslConfig config map
  Add type coercion from Map to ProxySslConfig
This closes #119